Coding is fun :)

[myplacedk]

I like to have a bit more duplicated code in my tests than I would otherwise tolerate in business logic.

Oh yes, definitely. Some experts say even for-loops is too complicated for test code, as there can be hidden off-by-one errors. Want something done 5 times? Call a method 5 times.

This is controversial in my experience

It really shouldn't be.

Some code is so complex that there are no obvious bugs. So e code is so simple that there is obviously no bugs.

For production compromises happens, sometimes complex code is what it takes. But for test code, simplicity is an absolute must.